What is a characteristic of the great barier reef

The waters are generally crystal-clear, with submarine features clearly visible at depths of 100 feet (30 metres).They: protect coastlines from the damaging effects of wave action and tropical storms. provide habitats and shelter for many marine organisms. are the source of nitrogen and other essential nutrients for marine food chains.

Explanation:

The waters are generally crystal-clear, with submarine features clearly visible at depths of 100 feet (30 metres).They: protect coastlines from the damaging effects of wave action and tropical storms. provide habitats and shelter for many marine organisms. are the source of nitrogen and other essential nutrients for marine food chains.

Explanation:

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;

answer; group think;